Double-barrel gun of the swinging barrel type



Dec. 4, 1951 v. M. M. LAMBERT DOUBLEBARREL GUN 0E TEE SWINGING BARRELTYPE 4 Sheets-Sheet l Filed Jung l1, 1947 Dec. 4, 1951 v. M. M. LAMBERT2,577,335

DOUBLE-BARREL GUN oF THE SWINGING BARREL TYPE Filed June ll, 1947 4Sheets-Sheet 2 i .7o C f f e@ y 4f j' i IX l / 27 .f f y 22 Y /A 50fig/5 29 o 1J ff? I? P /0 f4 /5 /5 51 1 l? /v /25 22 v 29 [cf-:9, VW //Ll g Q o lILuLL-rLrLa-rby @wim Dec. 4, 1951 v. M. M. LAMBERT 2,577,335

DOUBLEBARREL GUN oF THE swINGING BARREL TYPE Filed June 1l, 1947 4Sheet's-Sheet 5 DCC 4, 1951 v. M. M. LAMBERT 2,577,335

DOUBLE-BARREL GUN OF THE SWINGING BARREL TYPE Filed June 1l, 1947 4Sheets-Sheet 4 l'numfL-Dwum, mm mmqgmvtz ipmwt Patented Dec. 4, 1951UNHTED- STATES FCE Victorine Marie Marguerite Lambert, Tangier, FrenchMorocco, Africa Application June 11, 1947, Serial No. 753,876

7 Claims. l

The present invention relates to double-barrelled sporting-guns. Y

The invention is more particularly directed to facilitating themanufacture of double barreled sporting-guns provided either withsuperposed or with juxtaposed barrels in a manner which will bedescribed hereinafter and which eliminates the hitherto employedfalse-breech and makes it possible to simplify the gun mechanism whilegiving the weapon an increased strength.

To this end, the invention comprises two superposed or juxtaposed gunbarrels which are hingedly interconnected near their muzzle ends, therear ends of the barrels` being swingably mounted on the forward end ofa slide plate which is movably engaged with the breech-block andbuttstock. Within this plate is slidably mounted a second plate carryinga pair of projecting pins extending through the breech to engage andcock the hammers. This plate is operated by pins on the barrels engagingcam slots in the plate, one pair of these pins operating ejectors in thecartridge ends of the gun barrels.

To provide the swinging mounting of the gun barrels on the slide plate,one barrel is formed with an annular trunnion engageable in a circularopening in the slide plate, and the other barrel carries a circulartrunnion engageable in the annular trunnion when the barrels are swungtoward each other about their hinge connection, a spring latch beingprovided to hold the barrels in this mutually parallel or firingposition. The slide plate embraces the breech-block, and its rear end iscooperable with a locking bolt in the buttstock to lock the barrels tothe breechblock, or to release the barrels for swinging on the slideplate to eject discharged shells and to cock the hammers.

With the foregoing in mind, it is among the objects of this invention toprovide an improved double-barrelled gun which is simple and inexpensiveto manufacture and assemble and is reliable in operation.

Another object is to provide such a gun comprising relatively fewcomponent parts forming a simplified operating mechanism.

These and other objects, advantages and novel features of the inventionwill be apparent from the following description and the accompanyingdrawings.

Belgium June 21, 1946 In the drawings:

Fig. 1 is a plan view of the two gun barrels as hingedly interconnectedbefore assembly into the gun.

Fig. 2 is a, plan view of the barrel supporting slide plate and theplate mounted therein for cocking the hammers and ejecting dischargedshells.

Fig. 3 is a side elevation view of the breechblock.

Fig. 4 is a front elevation view thereof.

Fig. 5 is a vertical, medial sectional view through the bolt.

Fig. 6 is a rear elevation View of the bolt.

Fig. 7 is a longitudinal sectional view of the rear portion of the gun,showing the interrelation of the elements illustrated in Figs. 1 through6.

Fig. 8 is a perspective view of the buttstock and barrel slide plate, asdisassembled from the barrels.

Fig. 9 is a perspective view showing the barrels broken from thebreechblock and buttstock.

Figs. lO, 11 and 12 are plan views, partially in section, illustratingthe assembling of the slide plate, the breech-block, and the hammervcocking and shell ejecting plate.

Fig. 13 is a partial longitudinal sectional view l of the gun, with thebarrels removed therefrom,

showing the elements in the gun cooking position.

Fig. 14 is a similar View, showing the elements in a position releasingthe slide plate and with the hammer cocking plate moved to its hammerengaging position.

Referring to Fig. l of the drawings, the gun includes two barrels C1 andC2 having locks I and 2 at their muzzle ends interconnected by a pin 3to form a hinge interconnectionfor the gun barrels. Near its other end,barrel C2 has a attened portion formed with a circular or cylindricaltrunnion ll-arranged to engage within the bore 6 of an angular trunnion5 formed ona flattened portion of the gun barrel C1. Intermediate theirends, the two barrels are provided with releasable spring latch elements1, l, arranged to resiliently interengage to hold the barrels insubstantially parallel relation with the trunnions interengaged. For apurpose to be de- Y scribed hereinafter, the cartridge chamber ends `key22 and spring 3|.

of both barrels are formed with projecting pins I4 and barrel C2 isformed with a second pin I5'.

The gun barrels are arranged to be swingably supported on a slide plate9 illustrated more particularly in Figs. 2, 7, 8 and 10 through 14. Forthis purpose, plate S is formed adjacent its forward end, with acircular aperture It arranged to t over the trunnion 5. Rearwardly oithis aperfture, plate 9 is formed with an elongated rectangular aperturei I which connects with a narrower rectangular aperture I2 at the rearend of slide plate 9, The cross bar thus formed at the rear end ofplate@ and interconnecting the side bars 2E', 2t', has a downwardly andrearwardly beveled inner edge 2l for a purpose to be described.

Slidably mounted for longitudinal movement in rectangular aperture I I,iSVv a second plate I3 which is formed with a slot Ill arranged toreceive the gun barrel pin I4. when the latter are. as sembled withplate 9, and a slot I arranged to receive the pin i5. Projecting iromthe rear end of plate I3 are a pair oi spaced pins IS, it' which extendthrough the breech-block to cock the hammers of the gun.

rI "he breech-block is shown more particularlyT in Figsj, 4, 7 and l0through l4. As illustrated, breech-block I'I is generally elliptical inend elevat-ion, with flattened narrow ends, and has a pair of holes I5which are arranged to slidably receive the pins Iii ci plate i3. Theforward face or the breech-block is formed with a pair of bevelledorchamfered recesses 23 arranged to ttingly interengage thecorrespondingly bevelled or chamfered ends 2li and 2li', respectively,of the two gun barrels. Centrally, of the two recesses, are a pair ofapertures 25, 25 through which the hammers I9 of the gun may act tostrike cartridges loaded in the cartridge chambersof the two gunbarrels'. lower ends, breech-lock Ilis formed with a pair of rectangularslots 2li, 25 arranged to slidably engage bars 25", 2t', oi"- slideplate il.

The gun bolt is shown best in Figs. 5 through 7, i3 and 14.. As shown,locking bolt I8 is generally rectangular and has an uppersemi-cylindrical recess with an inwardly projecting pin 29 arranged toengage a helical groove 3d in a key 22. Intermediate its ends, saidlocking boltk I8 is formed with a recess 23 arranged tol slidablyreceive a compensator 32 formed on breech-block H- and extendingrearwardly from the latter. 'The rearwall of the locking bolt I8 isrecessed inwardly; as at 28', adjacent aperture 28', Beneath aperture23, the rear surface of said bolt i8 is bevelled, as at 27', forcooperation with cross bar 2-'I'r of slide plate t. The pin projectsdownwardly from the bottom surface of bolt I8 to act as a seat for acoil spring 3 i.

The gun is assembled inthe following manner. Referring to Figs. l0through l2, breech-block Il' isinserted through rectangular apertureII.' of plate 9v as shown in Fig. l()A and is then rotated as shown inFig. 11, diagonally opposite ends ofA slots 26 being rounded on' topermit such rotation. IThe block is then slid into the smallerrectangular recess I2, as shown in Fig. 12, after which plate I3 ismounted in aperture II. With plate I3y forwardly in aperture II, andbreech-block I'I moved forwardlyV so that pin- I6 projects through holeI6', the locking bolt It is inserted through theY rear portion ofaperture I2, and engaged with This relation is shown essentially inFigs. 13 and 14. The gun barrel C1 is then so arranged that trunnion 5is disposed intermediate its upper and .1,

\. intoY the operative position.

in hole It of block 9, and gun barrel C2 is then swung toward gun barrelC1 to engage trunnion 4 within bore 6 of trunnion 5. During suchmovement, care must be taken that pins I4' engage in slot i4 and pin I5engages in slot I5.V

The snap locking action of members 1, l holds the gun barrels inassembled relation with slide plate I0. The assembly of the gun iscompleted by securing breech-block I'I to buttstock 8 in any suitablemanner. The buttstock is provided with a lateral recess for allowingaccess to triggers 2 I, 2 I, while protecting the latter from accidentalmanipulation.

The gun operates in the following manner. Assuming that the shells inboth barrels have been discharged, handle 22 is operated to turn thebolt, causing pin 29 to ride downwardly along groove 30 moving bolt I8downwardly. This causes surfaces 2l to move downwardly relative tosurface ZI'voi the cross bar of the slide plate 9, so that the latterbecomes aligned with the recess 28 in the rear surface of the lockingbolt I3. The slide plate 9, and its hingedly attached barrels Crand C2,may now be moved forwardly 'as shown more particularly in Figs. 9 and14.

When the barrels are swung to the position of Fig. 9, the movement ofpins I4 and i5' along slots it and I5 moves plate I3 rearwardly relativeto breech-block Il. This causes pins i5 to move rearwardly throughaperture it (Fig. 4) to vstrike hammers I9 and swing the same clockwiseso that they are cocked by the sear 2Q interconnected to triggers 21|.This action occurs during `movement of pins i4 along the diagonalportion of slot I4. As the gun barrels continue to swing, pin I5interacting with slot I5 continues rearward movement or"v plate i3. Aspins l 4 enter the transverse portion of' groove I 4, they moverearwardly their attached ejectors 33 to eject the'disch-arged shellsfrom the rear ends of the barrels. New shells are then inserted in thecartridge chambers andthe barrels are swung back toward the firingposition, this swinging action moving plate I3 forwardly. When thebarrels have returned to the ring position, the

lock 22 is rotated whereupon spring il causes bolt i8 to rise duringmovement of pin 2e along groove 3G, and surface 2v engages surface 2'1to nrmly pull slide plate 9 and the attached barrels The gun is nowready to be iired again. While the invention has been described asapplied to superposed barrels C1- and C2, it will be clear that asubstantially iden-tical arrangement can be used for juxtaposed barrels,with a slight change. in buttstock 8.

The gun is red in the following manner. Whenthe forward trigger 2i ispulled, member 2i? is rocked counterclockwse so thatv its lower endreleases the lower end of hammer I9.. The associated spring then biasesthe hammer to project its firing pin through aperture 2E to strike acartridge in barrel C1. The other barre1 is fired by a similarmechanism, not shown, operated by the rearY trigger 2iv to. release anidentical hammer I9 associated with. barrel C2.y

While a speciiic embodiment of the invention has been shown anddescribed in detail to illustrate.v the application of the inventionprinciples, it should be understood thatA the invention may be otherwiseembodied withoutdeparting from such principles.

What I claim is:

1*. In a` doublebarrel. gun of the swinging barrel type a pair ofbarrels hingedly interconnected adjacent their forward ends, one of saidbarrels'having, near its rear end, an annular trunnion projecting towardthe other barrel and the latter having, near its rear end, a cylindricaltrunnion engageable within said annular trunnion when said barrels areswung -into parallel relation; releasable interengageable locking meanson said barrels eiective to maintain the same in such parallel relation;a barrel supporting slide plate tting between the parallel relatedbarrels and having a circular aperature in its forward portion receivingsaid annular trunnion to form a swinging mount for said barrels; abuttstock; a breach-block secured to said buttstock; said slide platehaving a rectangular aperture in its rear portion closely embracing saidbreech-block and providing for interlocked, longitudinal slidingmovement of said slide plate re1- ative to said breech-block; andlocking means mounted in said buttstock and extending through suchrectangular aperture beyond said breech-block, and movable transverselyof such rectangular aperture in engagement with the rear side thereof todraw said slide plate rearwardly to lock the rear ends of said barrelsagainst said breech-block; said last-named means being reversely movableto release said slide plate, for forward movement to provide forswinging of said barrels relative to said slide plate.

2. In a double barrel gun of the swinging barrel type a pair of barrelshingely interconnected adjacent their forward ends, one of said barrelshaving, near its rear end, an annular trunnion projecting toward theother barrel and the latter having, near its rear end, a cylindricaltrunnion engageable within said annular trunnion when said barrels areswung into parallel relation; releasable interchangeable locking meanson said barrels eective to maintain the same in such parallel relation;a barrel supporting side plate fitting between the parallel relatedbarrels and having a circular aperture in its forward portion receivingsaid annular trunnion to form a swinging mount for said barrels; abuttstock; a breech-block secured to said buttstock and having a pair ofcircular recesses forming seats for the rear ends of said barrels; apair of hammers mounted in said breech-block, each swingable in adiametric plane of a different recess and formed with firing pinsprojectable through axial apertures in said recesses; said slide platehaving a rectangular aperture in its rear portion closely embracing saidbreechblock and providing for interlocked, longitudinal sliding movementof said slide plate relative to said breech-block; and locking meansmounted in said buttstock and extending through such rectangularaperture beyond said breechblock, and movable transversely of suchrectangular aperture in engagement with the rear side thereof to drawsaid slide plate rearwardly to lock the rear ends of said barrelsagainst said breech-block; said last-named means being reversely movableto release said slide plate for forward movement to provide for swingingof said barrels relative to said slide plate.

3. In a double barrel gun of the swinging barrel type a pair of barrelshingedly interconnected adjacent their forward ends, one of said barrelshaving, near its rear end, an annular trunnion projecting toward theother barrel and the latter having, near its rear end, a cylindricaltrunnionV engageable within said annui-ar trunnion when said barrels areswung into parallel relation; releasable interen'gageable locking meanson said barrels effective to maintain the same in such parallelrelation; a barrel supporting slide plate fitting between the parallelrelated barrels and having a circular aperture in its forward portionreceiving said annular trunnion to form a swinging mount for saidbarrels; a buttstock; a breech-block secured to said buttstock andhaving a pair of circular recesses forming seats for the rear ends ofsaid barrels; a pair of hammers mounted in said breech-block. eachswingable in a diametric plane of a different recess and formed withfiring pins projecty able through axial apertures in said recesses; saidslide plate having a rectangular aperture in its rear portion closelyembracing said breechblock and providing for interlocked, longitudinalsliding movement of said slide plate relative to said breech-block. theside legs of the rectangular' aperture sliding in grooves in saidbreechblock and the inner surface of the rear ledge thereof slopingdownwardly and rearwardly; a lock bolt extending through the rectangularaperture rearwardly of the breech-block and shiftable parallel thereto,said bolt having a sloping surface cooperable with that of said rearledge to wedge said slide'plate rearwardly to firmly engage the gunbarrels in such recesses; and means for so shifting said bolt in reversedirections to lock and to release said side plate, respectively.

4. A double barrel gun as claimed in claim 3 in which the rectangularaperture comprises a relatively narrow rear portion embracing saidbreech-block and a relatively wider forward portion, the width of theforward portion being sucient to provide for insertion of thebreechblock therethrough when rotated from its ultimate position, androtation of said breechblock to its normal position for linear movementinto the rear -portion of such rectangular aperture and diagonallyopposite ends of the breechblock grooves being rounded off to facilitatesuch rotation of the breech-block in said forward portion.

5. A double barrel gun as claimed in claim 3 in which the rectangularaperture comprises a relatively narrow rear portion embracing saidbreech-block and a relatively wider forward portion, said breechblockbeing formed with a pair of longitudinal holes each aligned with ahammer; a slide member mounted in the forward portion of saidrectangular recess for longitudinal movement relative to saidbreech-block and having a pair of projecting pins each slidable throughone of such breech-block holes; and means on one of said barrels engagedwith said slide member and operable, during swinging movement of thebarrels out of engagement with said breech-block, to move said slidemember rearwardly to cause said pins to engage and cock said hammers.

6. In a double barrel gun of the swinging barrel type a pair ofinterconnected barrels; an annular trunnion near the rear end of saidbarrels projecting between them in a direction perpendicular to the axisof said barrels; a buttstock; a breech-block secured to said buttstock;a barrel supporting slide plate tting between the parallel relatedbarrels; a circular aperture in the forward portion of said slide plateto receive said annular trunnion forming a swinging mount for saidbarrels; said slide plate being longitudinally movable relative to saidbreech block and locking means mounted in said buttstock to4 draw andlock the slide plate in its rear position in which the rear ends of:said barrels are applied against said breech block.

7". Ina double: barrel gun of the swinging barrel type a pair ofYbarrels hingedly interconnected adjacent their forward ends; each ofsaid barreis having', nearV its rear end, a component portion of atrunnion projecting toward each other, said coponent portions engagingeach other to form a cylindrical trunnion when said barrels are swunginto parallel relation; releasable interengageable locking means on`said barrels effective to maintain the same in such parallel relation; abarrel supporting slide plate fitting between the parallel relatedbarrels; a circular aperture in the forward portion. of said slide plateto receive said cylindrical trunnion forming a swinging mount for saidbarrels; a buttstock; a breech-block secured to said buttstock; saidslide plate being longitudinally movable relative to said breech block;and locking means mounted in said buttstock to draw and lock the slideplate in its rear position in which the rear ends of said barrels areapplied against said breech block.

VICTORINE MARE MARGUERITE LAMBERT.

No references cited.

